use description of the original model https://www.printables.com/model/1243521-filament-cutter-for-ender-3-v3-se
and add https://www.printables.com/model/1166619-ender3-v3-ke-fan-duct
modified parts for ender 3 v3 ke.
downside of this : x axis is shorter, you need to limit your plate to 205*220 in your slicer or you will cut your filament if you go between 205-220 on x axis.
Add V2 with better tolerence
Add cutter_base-KE-v1 for better fitting KE than the original
The author remixed this model.
modified part for better fitting with ender 3 v3 ke
shorter lever for less x axis loss => my plate is 220*205 now